WO2022022261A1

WO2022022261A1 - Cell direction handover method and device

Info

Publication number: WO2022022261A1
Application number: PCT/CN2021/105562
Authority: WO
Inventors: 刘钰菡
Original assignee: 大唐移动通信设备有限公司
Priority date: 2020-07-29
Filing date: 2021-07-09
Publication date: 2022-02-03
Also published as: CN114071588A; CN114071588B

Abstract

Embodiments of the present invention provide a cell direction handover method and device, applied in a base station. The method comprises: detecting a target terminal in an original non-anchor cell, the target terminal being a terminal supporting a dual connection function; determining a target cell on the basis of at least one cell adjacent to the original cell; configuring measurement information of the target cell, the measurement information comprising preset frequency point information on the target cell; sending a measurement request to the target terminal, the measurement request carrying the measurement information; obtaining a measurement report returned by the target terminal on the basis of the preset frequency point information; determining a target anchor cell according to the measurement report; and controlling the target terminal to switch to the target anchor cell. According to the embodiments of the present invention, the terminal supporting the dual connection function can be rapidly and accurately switched to the target anchor cell, and the accuracy and efficiency of cell handover can be improved.

Description

Cell-directed handover method and device

This application claims the priority of the Chinese patent application filed on July 29, 2020 with the application number 202010746571.5 and titled "A method and device for cell-directed handover", the entire contents of which are incorporated herein by reference middle.

technical field

The present invention relates to the field of communication technologies, and in particular, to a cell-directed handover method and device.

Background technique

In the early stage of 5G (5th generation mobile networks, fifth generation mobile communication technology) network construction, the NSA (non-standalone, non-independent) networking mode is usually used for network construction. The NSA networking mode refers to the deployment of a 5G network on the basis of existing 4G (4th generation mobile networks, fourth generation mobile communication technology) equipment, that is, using a 4G core network, a 4G wireless network, and a 5G wireless network.

The 5G base station in the NSA networking mode does not have an independent signaling plane, and relies on the 4G base station and the 4G core network to work. Therefore, the 4G side introduces an anchor cell to support EN-DC (EUTRA-NR Dual Connection, EUTRA-NR dual connection). ) function terminal to provide services, the EN-DC refers to the dual connection with 4G as the primary node and 5G as the secondary node. However, on the 4G side, there are not only 4G anchor cells, but also other cells that are not enabled or do not support the dual link function.

In the prior art, when an EN-DC terminal needs to switch to a 4G anchor cell from another cell that is not enabled or does not support the dual link function, it needs to perform cell switching based on coverage switching, that is, the EN-DC terminal moves The handover of the target 4G anchor cell can be realized only when the signal is located at the edge area of the current cell. This cell handover method is very inconvenient and the handover speed is low.

In addition, in the prior art, the RSRP (Reference Signal Receiving Power) values of all neighboring cells are usually measured on the 4G side, and the cell corresponding to the optimal measurement value among the measurement values is determined as However, this cell handover method cannot guarantee accurate handover to the target 4G anchor cell from other cells that are not enabled or do not support the dual link function, so the handover efficiency is low.

SUMMARY OF THE INVENTION

The embodiments of the present invention provide a cell-directed handover method and device, which can quickly and accurately handover an NSA terminal to an anchor cell, and can improve the accuracy and efficiency of cell handover.

An embodiment of the present invention provides a cell-directed handover method, which is applied to a base station, and the method includes:

detecting a target terminal in an original cell that is not an anchor point, where the target terminal is a terminal supporting a dual link function;

determining a target cell based on at least one adjacent cell of the original cell;

configuring measurement information of the target cell, where the measurement information includes preset frequency point information for the target cell;

sending a measurement request to the target terminal, where the measurement request carries the measurement information;

obtaining a measurement report returned by the target terminal based on the preset frequency point information;

determining the target anchor cell according to the measurement report;

Controlling the target terminal to switch to the target anchor cell.

An embodiment of the present invention provides a cell-directed handover device, which is applied to a base station, and the device includes:

a detection module, configured to detect a target terminal in a non-anchor original cell, where the target terminal is a terminal supporting a dual link function;

a first determining module, configured to determine a target cell based on at least one adjacent cell of the original cell;

a configuration module, configured to configure measurement information of the target cell, where the measurement information includes preset frequency point information for the target cell;

a sending module, configured to send a measurement request to the target terminal, where the measurement request carries the measurement information;

an obtaining module, configured to obtain a measurement report returned by the target terminal based on the preset frequency information;

a second determining module, configured to determine a target anchor cell according to the measurement report;

A handover module, configured to control the target terminal to handover to the target anchor cell.

The embodiments of the present invention include the following advantages:

The embodiment of the present invention can determine a target cell based on at least one adjacent cell of the original cell in the case that the target terminal in the original cell that is not the anchor point is a terminal supporting the dual link function, and initiate a notification to the target terminal For the dedicated measurement of the target cell, the measurement report returned for the dedicated measurement is obtained, and the target anchor cell is determined based on the measurement report, so that the target terminal can be quickly switched to the target anchor cell in a direction, and the target terminal and the target terminal are improved. Efficiency of establishing dual links in NSA cells.

The above description is only an overview of the technical solutions of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand , the following specific embodiments of the present invention are given.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 shows a flow chart of an embodiment of a cell-directed handover method of the present invention;

FIG. 2 shows a structural block diagram of an embodiment of a cell-oriented switching device according to the present invention;

FIG. 3 shows a structural block diagram of another embodiment of a cell-oriented switching apparatus according to the present invention.

specific embodiment

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Method Embodiment 1

Referring to FIG. 1, a flowchart of Embodiment 1 of a cell-directed handover method of the present invention is shown, which is applied to a base station and may specifically include:

Step 101, detecting a target terminal in a non-anchor original cell, where the target terminal is a terminal supporting a dual link function;

Step 102, determining a target cell based on at least one adjacent cell of the original cell;

Step 103: Configure measurement information of the target cell, where the measurement information includes preset frequency point information for the target cell;

Step 104: Send a measurement request to the target terminal, where the measurement request carries the measurement information;

Step 105: Obtain a measurement report returned by the target terminal based on the preset frequency point information;

Step 106, according to the measurement report, determine the target anchor cell;

Step 107: Control the target terminal to switch to the target anchor cell.

In practical applications, an area covered by a base station antenna is called a cell, the base station corresponds to one or more cells, and terminals in the cells can communicate with the base station through a wireless channel. In addition, frequency is an important configuration parameter of a cell, and preset frequency information is allocated to each cell.

The terminal specifically includes but is not limited to: smart phone, tablet computer, e-book reader, MP3 (moving image expert compression standard audio layer 3, Moving Picture Experts Group Audio Layer III) player, MP4 (moving image expert compression standard audio layer III) Layer 4, Moving Picture Experts Group Audio Layer IV) Players, Laptops, Car Computers, Desktop Computers, Set-Top Boxes, Smart TVs, Wearables, etc.

The existing communication network is in a situation where 4G network and 5G network coexist. Among them, the NSA (non-standalone, non-independent) networking mode is adopted in the initial stage of 5G network construction. The NSA networking mode refers to the deployment of 5G networks on the basis of existing 4G base stations. Specifically, 4G base stations are independently deployed. Control plane (4G base station carries control signaling), 5G base station and 4G base station jointly deploy user plane (5G base station and 4G base station carry user plane data) or 5G base station deploys user plane independently (only 5G base station carries user plane data). In the NSA networking mode, the link established by the 4G base station as the main node and the 5G base station as the secondary node is called a dual link, also known as EN-DC, and the network transmission rate of the terminal can be improved through the dual link. It should be noted that the terminal supporting the dual-link function refers to a terminal that can operate in the NSA networking mode, and the dual-link function is also called the EN-DC function.

A cell-directed handover method of the present invention can be applied to 4G base stations in an NSA networking mode and 4G base stations in a non-NSA networking mode. The 4G base station includes cells that support the dual link function in the NSA networking mode, and cells that do not have the dual link function enabled; the 4G base station includes cells that do not support the dual link function in the non-NSA networking mode, such as, 3D-MIMO (Multi-Input Multi-Output, multiple input multiple output) cells, TDD (time Division Duplexing, time division duplexing) cells.

It should be noted that in the NSA networking mode, the cell supporting the dual link function corresponding to the 4G base station side is also called the 4G anchor cell or anchor cell, and the cell corresponding to the 5G base station side is also called the NSA cell.

Optionally, the non-anchor original cell includes: a cell that does not support the dual link function in the non-NSA networking mode, that is, the first original cell; and a cell that does not enable the dual link function in the NSA networking mode, that is, the second cell. original neighborhood.

In this embodiment of the present invention, a terminal supporting a dual link function in a first original cell can be directed to be handed over to an anchor cell by means of cell handover between 4G base stations, or a terminal supporting a dual link function in a second original cell can be directed The terminal is switched to the anchor cell by means of cell handover in the base station, so that the terminal supporting the dual link function can complete the directional handover for the anchor cell, and further control the terminal supporting the dual link function in the NSA networking mode. It can establish a dual link with the NSA cell on the 5G base station side to obtain a higher network transmission rate.

When the terminal enters the original cell that is not the anchor point, the base station corresponding to the original cell detects the terminal, and when it is detected that the terminal supports dual link capability, the terminal is determined as the target terminal, and based on At least one adjacent cell of the original cell determines the target cell. The preset frequency information of the target cell and the original cell is different, that is, the target cell and the original cell are inter-frequency cells.

According to the preset frequency point information of the target cell, the measurement information for the target cell is configured, and the measurement information includes the preset frequency point information for the target cell. The base station corresponding to the original cell sends a measurement request carrying the measurement information to the target terminal, and can control the target terminal to initiate dedicated measurement on the target cell according to the preset frequency point information.

The base station corresponding to the original cell acquires a measurement report returned by the target terminal based on dedicated measurement, and the measurement report includes the physical cell identification information and reference signal received power value corresponding to the target cell, and the base station corresponding to the original cell Configured with preset threshold values. Based on the physical cell identification information corresponding to the target cell, the received power value of the reference signal, and the preset threshold value on the base station side, and according to the target cell, the target anchor cell is determined. The base station corresponding to the original cell controls the target terminal to switch to the target anchor cell, and the target anchor cell is a cell supporting the dual link function in the NSA networking mode. By determining the target anchor cell, and Control the target terminal to switch from the non-anchor original cell to the target anchor cell, so as to further control the target terminal to establish a dual link with the NSA cell, and improve the network transmission rate of the target terminal

Therefore, in the embodiment of the present invention, in the case where the target terminal in the original cell that is not the anchor point is a supported terminal, the target cell can be determined based on at least one cell adjacent to the original cell, and the target terminal can be sent to the target terminal. For the dedicated measurement of the target cell, obtain the measurement report returned for the dedicated measurement, and determine the target anchor cell based on the measurement report, so as to realize the directional fast handover of the target terminal to the target anchor cell, and further improve the target terminal Efficiency of establishing dual links with NSA cells.

In this embodiment of the present invention, a terminal supporting a dual link function in a first original cell can be directed to be handed over to an anchor cell by means of cell handover between 4G base stations, or a terminal supporting a dual link function in a second original cell can be directed The terminal is handed over to the anchor cell by means of cell handover in the base station.

In an optional embodiment of the present invention, the non-anchor original cell includes: a first original cell in a non-NSA networking mode.

Optionally, determining the target cell based on at least one adjacent cell of the original cell in step 102 includes:

In at least one cell adjacent to the first original cell, a first target cell is determined.

Optionally, the measurement report includes a first reference signal received power value and a first physical cell identifier of a first neighbor cell, the first neighbor cell is adjacent to the first original cell, and the first neighbor cell is adjacent to the first original cell. The frequency of the first neighboring cell conforms to the preset frequency information.

The first target cell refers to an anchor cell adjacent to the first original cell, and the first target cell may include one or more cells. For example, the adjacent cells of the first original cell include cell A, cell B, cell C, cell D, and cell E, and the adjacent anchor cells of the first original cell include cell A, cell B, and cell E. .

Dedicated measurement is configured according to the first target cell (anchor cell), and the measurement information of the dedicated measurement includes preset frequency information of the cell A, the cell B, and the cell E. By sending the measurement request carrying the preset frequency information of the first target cell to the target terminal, the base station corresponding to the first original cell controls the target terminal, and the cells adjacent to the first original cell have The cell that matches the preset frequency information performs the measurement operation, for example, if the frequencies of cell A, cell B, cell C and cell E match the preset frequency information of the first target cell, then the The target terminal performs measurement operations on the cell A, cell B, cell C and cell E, and the cell A, cell B, cell C and cell E are the first adjacent cells.

It should be noted that the preset frequency information of the first target cell is different from the frequency information of the first original cell. Therefore, the first target cell and the first original cell are inter-frequency cells. The initiating dedicated measurement for the first target cell is called inter-frequency dedicated measurement.

The base station corresponding to the first original cell acquires a measurement report returned by the target terminal based on the preset frequency point information, and the measurement report includes the first reference signal received power value of the first neighboring cell and the first physical A cell identity (PCI, physical-layer Cell identity), for example, the measurement report includes the first reference signal received power value and the first physical cell identity corresponding to cell A, cell B, cell C, and cell E, respectively.

Optionally, determining the target anchor cell according to the measurement report in step 106 includes:

Step S11, comparing the first physical cell identifier in the measurement report with the neighbor cell table in the base station to obtain a first comparison result;

Step S12, determining a first measurement report corresponding to the first target cell according to the first comparison result;

Step S13: Determine a target anchor cell in the first target cell according to the first preset threshold value and the first reference signal received power value in the first measurement report.

Each base station stores a neighbor cell table, the neighbor cell table is pre-deployed in the base station by a person skilled in the art, and the neighbor cell table includes information of adjacent anchor cells of each cell corresponding to the base station. Comparing the first physical cell identifier in the measurement report with the neighbor cell table of the base station to obtain a first comparison result, where the first comparison result is used to screen the first adjacent cell An anchor cell adjacent to the first original cell, that is, the first target cell, is obtained, and a first measurement report corresponding to the first target cell is obtained by screening. For example, the measurement report includes the first reference signal received power values corresponding to cell A, cell B, cell C, and cell E and the first physical cell identifier, and by comparing the first physical cell identifier in the measurement report with the first physical cell identifier. The neighbor cell table of the base station is compared, and cell A, cell B, and cell E are determined as anchor cells of the first original cell, and first measurement reports corresponding to cell A, cell B, and cell E are obtained.

Optionally, the base station performs a sorting operation on the received power value of the first reference signal. An example of the sorting operation is to sort the numerical values from large to small, and the present invention does not limit the sorting operation.

A first preset threshold preset by a person skilled in the art is stored in the base station corresponding to the first original cell, and the first preset threshold is used to filter a first reference signal that meets the requirements in the first measurement report For the received power value, the first preset threshold is set by those skilled in the art according to service requirements, which is not limited in the present invention. For example, if the received power values of the first reference signal of the cell A and the cell B are within the first preset threshold range, the received power values of the first reference information of the cell A and the cell B meet the threshold requirements; If the received power value of the first reference information of the cell E is not within the first preset threshold range, the received power value of the first reference information of the cell E does not meet the threshold requirement. The result of sorting the first reference signal received power values in the first measurement reports of cell A and cell B by the base station from large to small is: the first reference signal received power value of cell A is greater than that of cell B , then, in the first target cells: cell A, cell B, and cell E, determine the target anchor cell as cell A. The base station triggers a handover operation and controls the target terminal to be handed over from the first original cell to the target anchor cell (cell A), so that the target terminal can further establish a dual link with the NSA cell and improve the target terminal's reliability. network transfer rate.

In an optional embodiment of the present invention, the non-anchor original cell includes: a second original cell in which the dual link function is not enabled in the NSA networking mode.

Step S21, determining a candidate cell in at least one cell adjacent to the second original cell, and the candidate cell satisfies the following conditions: the candidate cell supports a dual link function, and the candidate cell and the second original cell cover The ranges are the same, the candidate cell and the second original cell have different frequencies, and the base station corresponding to the candidate cell is the same as the base station corresponding to the second original cell;

Step S22, in the NSA cell adjacent to the candidate cell, determine the NSA cell with different frequency from the second original cell;

Step S23, determining the NSA cell that is inter-frequency with the second original cell as the second target cell.

The candidate cell refers to the anchor cell that satisfies the conditions in step S21 in the NSA networking mode. Among the NSA cells adjacent to the candidate cell, the NSA cell with different frequency from the second original cell is determined as the second target cell. For example, the adjacent anchor cells of the second original cell include cell A, cell B, cell C, and cell D, and the cells that satisfy the above conditions include: cell A and cell B, A and cell B are determined as candidate cells. The NSA cells adjacent to the candidate cell respectively include cell A: cell A1 and cell A2; cell B: cell B1 and cell B3. Among the NSA cells adjacent to the candidate cell, the cells with different frequencies from the second original cell include: cell A1, cell A2, and cell B1. Then, the cell A1, the cell A2, and the cell B1 are determined as the second target cell, and the second target cell is adjacent to the candidate cell.

The dedicated measurement is configured according to the second target cell, and the measurement information of the dedicated measurement includes preset frequency point information of the cell A1, the cell A2, and the cell B1. By sending the measurement request carrying the preset frequency information of the second target cell to the target terminal, the target terminal is controlled to initiate an inter-system dedicated measurement on the second target cell. The second adjacent cell is an NSA cell in the NSA networking mode, and the frequency of the second adjacent cell conforms to the preset frequency information. For example, the NSA cells in the NSA networking mode include cell A1, cell A2, cell B1, cell B3, cell C2, and cell D1. Wherein, if the frequency points of cell A1, cell A2, cell B1 and cell C2 are consistent with the preset frequency point information, the target terminal performs a measurement operation on the cell A1, cell A2, cell B1 and cell C2, and the cell A1, cell A2, cell B1, and cell C2 are the second adjacent cells.

Optionally, the measurement report includes a second physical cell identifier of a second adjacent cell, the second adjacent cell is an NSA cell in the NSA networking mode, and the second adjacent cell's The frequency points conform to the preset frequency point information.

The base station corresponding to the second original cell acquires a measurement report returned by the target terminal based on the preset frequency point information, where the measurement report includes a second physical cell identifier of the second neighboring cell. For example, the measurement report includes second physical cell identifiers corresponding to cell A1, cell A2, cell B1, and cell C2.

Step S31, comparing the identifier of the second physical cell in the measurement report with the neighbor cell table in the base station to obtain a second comparison result;

Step S32, determining a target NSA cell according to the second comparison result and the measurement report;

Step S33: Determine the candidate cell corresponding to the target NSA cell as the target anchor cell.

Each base station stores a neighbor cell table, the neighbor cell table is pre-deployed in the base station by a person skilled in the art, and the neighbor cell table includes information about the adjacent NSA cells of each cell corresponding to the base station. Comparing the second physical cell identifier in the measurement report with the neighbor cell table in the base station to obtain a second comparison result, the second comparison result is used for screening in the second adjacent cell A second target cell adjacent to the candidate cell is obtained. For example, the measurement report includes second physical cell identifiers corresponding to cell A1, cell A2, cell B1, and cell C2, and by comparing the second physical cell identifier in the measurement report with the neighboring cells in the base station The tables are compared, and it is determined that cell A1, cell A2, and cell B1 are the second target cells.

Determine the target NSA cell according to the second comparison result. For example, from the second comparison result, it can be known that cell A1, cell A2, and cell B1 are the second target cell, and according to the measurement report, it can be known that the cell A1 is For the first measured NSA cell, the cell A1 is determined as the target NSA cell.

Determining the candidate cell corresponding to the target NSA cell as the target anchor cell, for example, determining the candidate cell (cell A) corresponding to the cell A1 as the target anchor cell.

The base station triggers a handover operation and controls the target terminal to blindly switch from the second original cell to the target anchor cell, thereby further establishing a dual link with the target NSA cell and improving the network transmission rate of the target terminal.

In an optional embodiment of the present invention, after the target NSA cell is determined in step 106, the method further includes:

Write the cell information of the target NSA cell into the candidate cell information list.

In an optional embodiment of the present invention, after controlling the target terminal to switch to the target anchor cell in step 107, the method further includes:

According to the cell information of the target NSA cell in the candidate cell list, the target anchor cell is controlled to establish a dual link with the target NSA cell.

After the base station corresponding to the second original cell determines the target NSA cell, the cell information of the target NSA cell is written into the candidate cell list (Candidate CellInfo List) of the second original cell. When the target terminal is handed over to the target anchor cell, the second original cell sends a handover request to the target anchor cell, and the handover request carries the candidate cell list, the candidate cell list It is used to control the target terminal to automatically establish a dual link with the target NSA cell when switching to the target anchor cell. The embodiment of the present invention can improve the accuracy and efficiency of establishing a dual link.

Optionally, the present invention can also carry the preset frequency information and preset frequency corresponding to the anchor cell in the RRC (Radio Resource Control, Radio Resource Control) connection release message after the NSA terminal fails to switch the anchor cell. The priority information, so as to control the NSA terminal to be able to quickly switch from the idle state to the anchor cell. The RRC connection release message refers to that the base station sends to the terminal through the network to notify the terminal to release the RRC connection and radio resources, so as to execute the disconnected state and re-select the anchor cell.

Step S41, count the number of handover information and the handover success rate information of the target terminal handover to the target anchor cell;

Step S42, outputting the switching times information and the switching success rate information.

The number of handover information includes, but is not limited to, the number of times of NSA terminal directed handover out requests, the number of NSA terminal directed handover out success times, the number of NSA terminal directed handover in request times, and the number of NSA terminal directed handover in success times.

The output handover times information and the handover success rate information can be used as reference information to provide handover trend data of the NSA terminal for those skilled in the art, thereby assisting those skilled in the art to perform network optimization and cell deployment adjustment operations. For example, if the amount of handover of the target anchor cell A is large, those skilled in the art can reasonably upgrade the target anchor on the base station side according to the statistics of the handover times of the target anchor cell A and then the handover success rate information. The priority information of the point cell A, so that when the NSA terminal needs to perform the anchor cell handover, the base station can control the NSA cell to quickly switch to the anchor cell according to the priority information, thereby improving the directional handover efficiency. The priority information can be flexibly set by those skilled in the art according to preset frequency information of the anchor cell.

To sum up, in the embodiment of the present invention, when the target terminal in the original cell that is not the anchor point is a terminal supporting the dual link function, the target cell can be determined based on at least one adjacent cell of the original cell, and the target cell can be sent to the original cell. The target terminal initiates a dedicated measurement for the target cell, obtains a measurement report returned for the dedicated measurement, and determines the target anchor cell based on the measurement report, so that the target terminal can be quickly switched to the target anchor cell in a targeted manner, improving the performance of the target terminal. The accuracy and efficiency of cell handover can further improve the accuracy and efficiency of establishing dual links between the target terminal and the NSA cell. In addition, the present invention can also improve the efficiency of network optimization and cell deployment for those skilled in the art according to the handover times information and the handover success rate information.

Device embodiment

Referring to FIG. 2, it shows a structural block diagram of an embodiment of a cell-oriented handover apparatus of the present invention, which is applied to a base station. The apparatus may specifically include:

A detection module 201, configured to detect a target terminal in a non-anchor original cell, where the target terminal is a terminal supporting a dual link function;

a first determining module 202, configured to determine a target cell based on at least one adjacent cell of the original cell;

a configuration module 203, configured to configure measurement information of the target cell, where the measurement information includes preset frequency point information for the target cell;

A sending module 204, configured to send a measurement request to the target terminal, where the measurement request carries the measurement information;

an obtaining module 205, configured to obtain a measurement report returned by the target terminal based on the preset frequency point information;

a second determining module 206, configured to determine the target anchor cell according to the measurement report;

The handover module 207 is configured to control the target terminal to handover to the target anchor cell.

Optionally, the non-anchor original cell includes: a first original cell in a non-NSA networking mode,

The first determining module 202 includes:

The determining a first target cell submodule is configured to determine a first target cell in at least one adjacent cell of the first original cell.

Optionally, the measurement report includes a first reference signal received power value and a first physical cell identifier of a first adjacent cell, the first adjacent cell is adjacent to the first original cell, and the The frequency of the first neighboring cell conforms to the preset frequency information,

The second determining module 206 includes:

a first comparison submodule, configured to compare the first physical cell identifier in the measurement report with the neighbor cell table in the base station to obtain a first comparison result;

determining a measurement report submodule, configured to determine a first measurement report corresponding to the first target cell according to the first comparison result;

A first target anchor cell determination sub-module, configured to determine a target anchor cell in the first target cell according to the first preset threshold value and the first reference signal received power value in the first measurement report .

Optionally, the original cell that is not an anchor point includes: a second original cell that does not have a dual link function enabled in the NSA networking mode,

The first determining module 202 includes:

A submodule for determining a candidate cell, configured to determine a candidate cell in at least one cell adjacent to the second original cell, where the candidate cell satisfies the following conditions: the candidate cell supports a dual link function, and the candidate cell and the The second original cell has the same coverage, the candidate cell and the second original cell have different frequencies, and the base station corresponding to the candidate cell is the same as the base station corresponding to the second original cell;

a submodule for determining an inter-frequency NSA cell, configured to determine an NSA cell that is inter-frequency with the second original cell among the NSA cells adjacent to the candidate cell;

The determining second target cell sub-module is configured to determine the NSA cell that is inter-frequency with the second original cell as the second target cell.

Optionally, the measurement report includes a second physical cell identifier of a second adjacent cell, the second adjacent cell is an NSA cell in the NSA networking mode, and the second adjacent cell has a The frequency point conforms to the preset frequency point information,

The second determining module 206 includes:

a second comparison submodule, configured to compare the second physical cell identifier in the measurement report with the neighbor cell table in the base station to obtain a second comparison result;

a submodule for determining a target NSA cell, configured to determine a target NSA cell according to the second comparison result and the measurement report;

The second target anchor cell determination sub-module is configured to determine the candidate cell corresponding to the target NSA cell as the target anchor cell.

Optionally, the device further includes:

a writing module, for writing the cell information of the target NSA cell into the candidate cell information list;

An establishment module, configured to control the target anchor cell to establish a dual link with the target NSA cell according to the cell information of the target NSA cell in the candidate cell list.

Optionally, the device further includes:

A statistics module, configured to count the number of handover information and the handover success rate information of the target terminal switching to the target anchor cell;

An output module, configured to output the switching times information and the switching success rate information.

To sum up, in the embodiment of the present invention, when the target terminal in the original cell that is not the anchor point is a terminal supporting the dual link function, the target cell can be determined based on at least one adjacent cell of the original cell, and the target cell can be sent to the original cell. The target terminal initiates a dedicated measurement for the target cell, obtains a measurement report returned for the dedicated measurement, and determines the target anchor cell based on the measurement report, so that the target terminal can be quickly switched to the target anchor cell in a targeted manner, improving the performance of the target terminal. Efficiency of establishing dual link between target terminal and NSA cell.

An embodiment of the present invention further provides a cell-oriented handover device, see FIG. 3 , including: one or more processors 301, one or more readable storage media 302, and one or more readable storage media 302, stored on the storage media and available in the A computer program 3021 running on the processor, when the processor executes the computer program, the cell-directed handover method of the foregoing embodiment is implemented.

An embodiment of the present invention further provides a readable storage medium, when the computer program in the storage medium is executed by the processor of the cell-oriented handover device, the cell-oriented handover device can execute the cell-oriented handover method of the foregoing embodiments. In order to avoid repetition, the details are not repeated here. The readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disk.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments may be referred to each other.

Regarding the apparatus in the above-mentioned embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment of the method, and will not be described in detail here.

The device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.

Reference herein to "one embodiment," "an embodiment," or "one or more embodiments" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention. Also, please note that instances of the phrase "in one embodiment" herein are not necessarily all referring to the same embodiment.

In the description provided herein, numerous specific details are set forth. It will be understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. do not denote any order. These words can be interpreted as names.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

A method for cell-directed handover, characterized in that it is applied to a base station, and the method includes:

detecting a target terminal in an original cell that is not an anchor point, where the target terminal is a terminal supporting a dual link function;

determining a target cell based on at least one adjacent cell of the original cell;

configuring measurement information of the target cell, where the measurement information includes preset frequency point information for the target cell;

sending a measurement request to the target terminal, where the measurement request carries the measurement information;

obtaining a measurement report returned by the target terminal based on the preset frequency point information;

determining the target anchor cell according to the measurement report;

Controlling the target terminal to switch to the target anchor cell.
The method according to claim 1, wherein the original cell that is not an anchor point comprises: a first original cell in a non-non-independent networking NSA networking mode, and the original cell based on neighbors of the original cell at least A cell, to determine the target cell, including:

In at least one cell adjacent to the first original cell, a first target cell is determined.
The method according to claim 2, wherein the measurement report includes a first reference signal received power value and a first physical cell identifier of a first neighboring cell, and the first neighboring cell is the same as the first neighboring cell. An original cell is adjacent, and the frequency of the first adjacent cell conforms to the preset frequency information, and determining the target anchor cell according to the measurement report includes:

Comparing the first physical cell identifier in the measurement report with the neighbor cell table in the base station to obtain a first comparison result;

determining a first measurement report corresponding to the first target cell according to the first comparison result;

A target anchor cell is determined in the first target cell according to the first preset threshold value and the first reference signal received power value in the first measurement report.
The method according to claim 1, wherein the original cell that is not an anchor point comprises: a second original cell without a dual link function enabled in an NSA networking mode, the original cell based on at least one adjacent to the original cell. A cell, to determine the target cell, including:

A candidate cell is determined in at least one cell adjacent to the second original cell, and the candidate cell satisfies the following conditions: the candidate cell supports the dual link function, and the candidate cell has the same coverage as the second original cell, The candidate cell and the second original cell have different frequencies, and the base station corresponding to the candidate cell is the same as the base station corresponding to the second original cell;

determining an NSA cell that is inter-frequency with the second original cell among the NSA cells adjacent to the candidate cell;

The NSA cell with different frequency from the second original cell is determined as the second target cell.
The method according to claim 4, wherein the measurement report includes a second physical cell identifier of a second neighboring cell, and the second neighboring cell is an NSA cell in the NSA networking mode, and the frequency of the second neighboring cell conforms to the preset frequency information, and determining the target anchor cell according to the measurement report includes:

Comparing the second physical cell identifier in the measurement report with the neighbor cell table in the base station to obtain a second comparison result;

determining a target NSA cell according to the second comparison result and the measurement report;

The candidate cell corresponding to the target NSA cell is determined as the target anchor cell.
The method according to claim 5, wherein after the target NSA cell is determined, the method further comprises:

Write the cell information of the target NSA cell into the candidate cell information list;

After the control of the target terminal to switch to the target anchor cell, the method further includes:

According to the cell information of the target NSA cell in the candidate cell list, the target anchor cell is controlled to establish a dual link with the target NSA cell.
The method according to claim 1, wherein after the controlling the target terminal to switch to the target anchor cell, the method further comprises:

Statistics on the number of handovers and handover success rate information of the target terminal handover to the target anchor cell;

The switching times information and the switching success rate information are output.
A cell-oriented handover device, characterized in that it is applied to a base station, and the device includes:

a detection module, configured to detect a target terminal in a non-anchor original cell, where the target terminal is a terminal supporting a dual link function;

a first determining module, configured to determine a target cell based on at least one adjacent cell of the original cell;

a configuration module, configured to configure measurement information of the target cell, where the measurement information includes preset frequency point information for the target cell;

a sending module, configured to send a measurement request to the target terminal, where the measurement request carries the measurement information;

an obtaining module, configured to obtain a measurement report returned by the target terminal based on the preset frequency information;

a second determining module, configured to determine a target anchor cell according to the measurement report;

A handover module, configured to control the target terminal to handover to the target anchor cell.
The device according to claim 8, wherein the non-anchor original cell comprises: a first original cell in a non-NSA networking mode,

The first determining module includes:

The determining first target cell submodule is configured to determine the first target cell in at least one adjacent cell of the first original cell.
The apparatus according to claim 9, wherein the measurement report includes a first reference signal received power value and a first physical cell identifier of a first neighboring cell, and the first neighboring cell is the same as the first neighboring cell. An original cell is adjacent, and the frequency of the first adjacent cell conforms to the preset frequency information,

The second determining module includes:

a first comparison submodule, configured to compare the first physical cell identifier in the measurement report with the neighbor cell table in the base station to obtain a first comparison result;

determining a measurement report submodule, configured to determine a first measurement report corresponding to the first target cell according to the first comparison result;

A first target anchor cell determination sub-module, configured to determine a target anchor cell in the first target cell according to the first preset threshold value and the first reference signal received power value in the first measurement report .
The device according to claim 8, wherein the original cell that is not an anchor point comprises: a second original cell that does not have a dual link function enabled in an NSA networking mode,

The first determining module includes:

A submodule for determining a candidate cell, configured to determine a candidate cell in at least one cell adjacent to the second original cell, where the candidate cell satisfies the following conditions: the candidate cell supports a dual link function, and the candidate cell and the The second original cell has the same coverage, the candidate cell and the second original cell have different frequencies, and the base station corresponding to the candidate cell is the same as the base station corresponding to the second original cell;

a submodule for determining an inter-frequency NSA cell, configured to determine an NSA cell that is inter-frequency with the second original cell among the NSA cells adjacent to the candidate cell;

The determining second target cell sub-module is configured to determine the NSA cell that is inter-frequency with the second original cell as the second target cell.
The apparatus according to claim 11, wherein the measurement report includes a second physical cell identifier of a second neighboring cell, and the second neighboring cell is an NSA cell in the NSA networking mode, and the frequency of the second adjacent cell conforms to the preset frequency information,

The second determining module includes:

a second comparison submodule, configured to compare the second physical cell identifier in the measurement report with the neighbor cell table in the base station to obtain a second comparison result;

a submodule for determining a target NSA cell, configured to determine a target NSA cell according to the second comparison result and the measurement report;

The second target anchor cell determination sub-module is configured to determine the candidate cell corresponding to the target NSA cell as the target anchor cell.
The apparatus of claim 12, wherein the apparatus further comprises:

a writing module, for writing the cell information of the target NSA cell into the candidate cell information list;

An establishment module, configured to control the target anchor cell to establish a dual link with the target NSA cell according to the cell information of the target NSA cell in the candidate cell list.
The apparatus according to claim 8, wherein the apparatus further comprises:

A statistics module, configured to count the number of handover information and the handover success rate information of the target terminal switching to the target anchor cell;

An output module, configured to output the switching times information and the switching success rate information.
A cell-oriented switching device, characterized in that it includes:

one or more processors; and

One or more readable storage media having stored thereon a computer program which, when executed by the one or more processors, causes the apparatus to perform the method of any one of claims 1 to 7 Cell-directed handover method.
A computer program, comprising computer-readable code, which, when the computer-readable code is run on a computing and processing device, causes the computing and processing device to execute the cell-directed handover method according to any one of claims 1-7 .
A computer-readable medium in which the computer program of claim 16 is stored.